Punching-machine



(No Model.)

A. ALBIEN. PUNGHING MACHINE.

Patented Aug. 28, '1883;

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Nv PEYERS. mwum m, Wah'mglan. D C,

PUNCHING-MACHINE.

SPECIFICATION forming part of Letters Application filed March 24, 1882.

Patent No. 283,740, dated August 28, 1-883.

(No model.)

To all whom it may concern Be it known that I, ALLEXANDER Amman, asubject of the Emperor of Germany, and a resident of Mendota, in thecounty of Dakota and State of Minnesota, have invented a certain new anduseful Improvement in Punching Machines, of which the following is aspecification.

This invention relates to machines for p unching metal; and it consistsin the construction and arrangement of parts, as hereinafter de.

scribed and claimed, and illustrated by the accompanying drawings, inwhich- Figure 1 is a side view, and Fig. 2 is a front View, of thepunching-machine complete. Fig. 3 is a sectional side view, and Fig. 4isafront view, of the leverhead detached. Fig. 5isa detached perspectiveview of the lever-head keeper, detached. Fig. 6 is a detachedperspective view of the stop. Figs. 7, 8, 9, and 10 are detachedperspective views of the leverhead, plunger, and punch disconnected.Fig. 11 is a transverse section on the line a of Fig. 1. Fig. 12 is adiagram illustrating the operation of the lever-head and punch-plunger.

Ais the frame or body of the punching-machine, having a tapering squareshank, B, at lower end, by which the machine maybe held in an uprightposition in square holes in tables or work-benches, and with an openthroat, C, and head D, through the latter of which the square plunger Eof the machine'is adapted to be moved upward and downward. The upperpart of the plunger E is provided with an eye, a, through which a steelpin or short shaft,

'1), is passed, and its projecting ends inserted into downwardlytrendingslots 0 in the insides of the jaws d d of a lever-head, F, to which ahandle, F", of any suitable length, is attached. G is a keeper orholding-plate, the lower end of which is forked and the forks curvingbaekward and adapted to rest by their lower points against the ends ofthe pin 1), so that when bolted fast to the head F by the bolt ethepin 1) will be held in the slots 0, while the forks, passing each sideof the eye a, will not interfere with the operation of the plunger E.

Upon the outsides of the jaws (Z d", a little below the center line ofthe pin b when it is in place in the slots 0, are two studs, g overwhich the upper ends of straps H H are held by nuts or pins, while thelower ends of the straps are similarly attached to studs h If on thesides of the head D of the frame A. By this arrangement of the straps,lever-head, pin b, and plunger alever is formed for forcing the plungerdownward the distance from the center of the eye a and pin I) to thecenter of the studs g 9 being the nip, and the studs 9 9* being thefulcrum. This is more clearly illustrated by Fig. 12, which representsan out line diagram of the plunger, lever, and straps in their twoextreme relative positions, the left-hand View representing the parts inan upright position, and in the right-haud view they are shown in theposition they will assume when the plunger is depressed. Thus a verypowerful leverageis secured to force the when forcing the plungerdownward, will come upon the keeper G, the only oflice of the latterbeing to hold the pin 1) in place.

By reversing the lever-head F the lever may be thrown over backward inoperating the plunger.

The lower end of the plunger is provided with a hole, in which the shankof the punch is provided with an enlargement, I", fitting between lugsor jaws m m onthe plunger to prevent the punch being turned.

K is a strap or cap embracing the lower part of the plunger to supportit, and attached, by bolts nn", to the face of the head D, these samebolts also holding two downwardlyprojecting plates, L L connected attheir lower ends to one common curved horizontal plate, L, (see Fig. 6,)these three plates forming a stop to force the metal off from the punchwhen it is raised upward.

Below the bolts a it, upon the head. 1), are small square studst it",over which slots o v in the plates L L fit, and beneath said studs,within said slots, small metal blocks av 10 are inserted to prevent theplates L L from being raised upward, and by using blocks of differentsizes the distance which the stop-plate L" will be above the die will bealtered to suit different thicknesses of metal.

M is a bevel-edged steel block or die set into a dovetail groove in theface of the throat part 0, with a hole through it corresponding to thepunch I,and held in placeby set'screws N, as shown;

plunger downward, and none of the strain,.

1 is securedby a set-screw, t, and the punch P is a guide-plate restingacross the interior of the throat G, and secured upon the side of theframe A by a set-screw, R, passing through a slot in the guide-plate, asshown in Fig. 1, so that the guide-plate may be adjusted to adapt thelatter to the width of the metal be ing punched.

The pin 1) may be made in one piece with I the plunger, if desired.

What I claim as new is 1. The combination of the frame having the headformed with an opening for the passage of a punch-supporting plunger,the lever-head provided with openings'for the reception of thepunch-supporting plunger and its conneeting-pin, straps for connectingthe frame-head and lever-head, the pin for connecting thepunch-supporting plunger and lever-head, and means for holding saidpinin place, substantially as and for the purpose set forth.

2. The frame A, having a head, D, formed in one piece therewith, aplunger, E, support ing and carrying a punch, I, at the bottom,

and a pin, 6, at the top, and adapted to be raised and lowered throughsaid head D, alever-head, F, with slots 0, for supporting said pin 1) inits interior, and with studs 9 g on its exterior, straps H H forconnecting said studs 1 g with studs h l1 upon said head D, and akeeper, G, substantially as set forth.

3. The combination of the plunger E, connecting-pin b, lever-head F,provided with openings for the reception of the plunger and its pin, andmeans for holding said pin in place,

substantially as and for the purpose set forth. 3 5

4. The combination of the head F, having the slots 0, and keeper G, andthe plunger E, having the pin I), substantially as set forth.

5. The frame A, having head D, boltsn a and studs t 1?, in combinationwith the stop 40 L L L, havingthe slots 11 v and the blocks 10 20*,substantially as and for the purpose set forth.

In testimony whereof Ih ave hereunto set my hand in the presence of twosubscribing wit- 45' nesses.

ALLEXANDER ALBIEN.

Vi tnesses:

JULIUS E. Bn'rnnn, O. N. Woonwnnn.

